Running tests on Cooley, I found MPI executables would crash when LD_PRELOAD was set to point to the libfmpich.so:libdarshan.so:libtrackdeps.so. Removing libtrackdeps.so solved the crash problem. It's not clear how trackdeps is working. Will need to talk to Hal.

Cooley documentation currently states to only set LD_PRELOAD=$DARSHAN_PRELOAD, so it avoids this issue. This was detected when running the regression suite which keeps any existing LD_PRELOAD libraries in addition to adding darshan.